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https://issues.apache.org/jira/browse/SOLR-6342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14099185#comment-14099185
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ASF subversion and git services commented on SOLR-6342:
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Commit 1618281 from [email protected] in branch 'dev/trunk'
[ https://svn.apache.org/r1618281 ]

SOLR-6342: build.xml clones lucene/CHANGES.txt as LUCENE_CHANGES.txt in solr 
releases; changes2html hotlinks LUCENE_CHANGES.txt when found

> Solr should mention CHANGES from Lucene which have side effects in Solr
> -----------------------------------------------------------------------
>
>                 Key: SOLR-6342
>                 URL: https://issues.apache.org/jira/browse/SOLR-6342
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Varun Thacker
>         Attachments: SOLR-6342.patch, SOLR-6342.patch
>
>
> This is the problem that I faced - A user upgraded Solr from 4.0 to 4.9 and 
> the queries being formed were behaving differently.
> I tracked it down to LUCENE-5180 ( which I believe is the correct thing to do 
> ) . The problem is since Solr does't ship with the Lucene CHANGES.txt file 
> and we didn't record this under the the Solr CHANGES.txt file also, a user is 
> not aware of such changes when upgrading.
> I can think of two options - 
> 1. Duplicate the changes which have side effects in Solr under Solr's 
> CHANGES.txt file also ( not sure if we do this already and that we missed 
> this one ).
> 2. Be conservative and ship Solr binaries with the Lucene CHANGES.txt file 
> also
> We should address this problem



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